N is really liking knock knock jokes, but he doesn't quite get how they work. Here's an example of how they go at our place, no matter how many times I try to correct him:
Me: "Knock knock"
N: "Who's at the door"
Me: "Boo"
N: "What does Boo say?"
Yeah, so that kind of kills the punch line. We'll stick to the "banana, banana, orange" one for now. Lucky for me (?) he's ok with repeating the same joke over and over again.
